Motor-cycle.



PATENTED MAR. 5, 1907.

w o JOHNSON. MOTOR GYGLE. APPLIUATION FILED NOV. 26, 1906.

I )K D) b 1/ ,Zkme w X 09 5. Z0 7' ZinJOa To all whom, 2'2, may concern.-

WALTER CLAUDE J oHN- catlon.

. showing the ,which the mud-guard of t UNITED j STATES PATENT orrron.

Specification of Letters Patent.

Patented March 5, 190?.

Application filecl'lidvemher 2c, 1906. Serial No. 845,196.

Be it known that I, soN, subject of the King of Great Britain, residing at Broadstone Farm, Colemans Hatch, in the county of Sussex, England,- have invented new and useful Improvements in M0- tor-Cycles, of which the following is a specifi- This invention-relates to a motor-cycle the arrangement of the parts of which is such as to conduce to special economy construction and safety-in use.

A leading feature of the invention consists in the adoption of such tive disposition of the. stands more or feet raised only the road.

Both'the front steering-wheel and the rear driving-wheel are of comparatively small diameter, the latter being made with twin rims or treads, between which is mounted a mo tor-driven wheel, whereby a "propelling effort is deirived from the motor by a pitch chain or The frame is A-shaped, the bar connecting the two legs being placed low down and adapted to carry the motor.

proportions andrelaparts that the rider less exactly erect, with his a little above the surface of On the accompanying drawing is shown a motor-cyclette. constructed in accordance with the foregoing description. H

In this drawing, Figure l is an elevation general arrangement of the parts of the machine. Fi 2 is a plan in e driving-wheel, the motor, and the handle-bar are removed; and ig. 3 is an enlarged view of the drivingwheel, half in plan and half in section.

According to these figures it-wil'l be seen that the distinctive features of the cyclette is its adaptability to carry at the lower forked end a of its back leg at a comparatively wide-rimmed driving-wheel Informed ith twin treads, and to provide supports 0 c for a foot-rest d on each side of the wheel, the foot-rests d d acing raised only a few inches above the level of the road. A second important feature of the contrivance consists in the driving arrangements. In. the neck between the two treads a wheel-rim e is pneumatically supported. This rim (shown driving-wheel 1) partially wraps, a pul ley g, which is secured to a counter shaft g, which by means of a pitch-chain and a pair of chain-wheels is driven by the motor h. The elastic mounting of the wheel-rim e thus obtained will serve to maintain a suitable tension on the driving-band f to prevent slip.

a In the deflated condition of the pneumatic tire the Wheel-rim e can be easily inserted within the hollow of the and around the outside of the middle of the width of the tire-cover i. The flexible cover l is made of appropriate lengths of periphery at the various parts of its width to enable it when inflated to have a cross-profile, as shown in Fig. 3,'there being two fortified treads ii,

rim of the wheel b a-neck i betweenfthe treads, adapted to fit the interior of the wheel-rim e, and fortiedges i? i whereby a secure attachment may be made with the overhanging edges b b of the rim of the wheel 6.

A suitable form of braking arrangement may be adopted, such as is at present employed by bicycles, or, alternatively, a brakeband 7' may be adjustably secured to the frame at 7' and carried around the outside of the driving-band f, Bowden transmission organ, which is operated by a hand-lever on the handle-bar in the usual way.

Z1 6 are wire spokes whereby the rim of the is secured to the hubb The employment of a twin-tread drivingwheel in the present invention in which the center of gravity of the machine and-rider is comparatively low and, on account of the standing attitude of the rider, is easily shifted laterally will enable the cycle to stand erect when at rest, and the normal liability to skid will be lessened, and by inclining onto one rim when rounding a corner the rid er will be able to still further lessen the skid on'account of the non-central situation of the supporting-rim.

On accountnf his erect position the rider will be able to incline his body so as to regulate the ressure on the steering-wheel to the desired degree for safety against skidding and for efficiency in propulsion.

I claim- A motorcycle having a front steeringwheel and a twin-tread rear driving wheel of less diameter than the steering-wheel, a suitable frame inwhich said wheels are j ournaled liability to to be attached at 7' to a 1 a motor carried within said frame, operating connections from the motor to said d-r-iVin Wheel, and a foot- Iatiorm located upon eac 1 I side of the rear W 1661 below the axis thereof, upon which the rider may stand astride of 5 the rearwheeland readily'mount and dismount therefrom, substantially as described.

In testimony whereof I have signed my name to this specification in 'the presence of two subscribing witnesses.

' WALTER CLAUDE JOHNSON.

\Vitnesses 1 "F. H. LANE, H. D. JAMESON. 

